Check of functioning of system of injection of fuel. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
4.1. General information
4.2. Pressure removal in system of injection of fuel
4.3. Check of pressure of fuel / fuel pump
4.4. Removal and installation of the fuel pump, intermediate pump and fuel level sensor
4.5. Repair and replacement of fuel lines and connectors
4.6. Removal and installation of a fuel tank
4.7. General information about cleaning and repair of a fuel tank
4.8. Removal and air purifier installation
4.9. Check, adjustment and replacement of a cable of an accelerator
4.10. General information about the carburetor
4.11. Removal and carburetor installation
4.12. Cleaning and carburetor adjustment
4.13. General information about fuel injection
4.14. Systems of injection of fuel
4.15. Check of functioning of system of injection of fuel
4.16. Functioning check, removal and installation of a measuring instrument of a stream of air
4.17. Functioning check, removal and installation of the case of a throttle
4.18. Check of functioning and replacement of a regulator of pressure of fuel
4.19. Check of functioning and replacement of an injector of cold start and temperature switch
4.20. Check of functioning and replacement of fuel injectors
4.21. Functioning check, adjustment and replacement of the air valve of stabilization of idling
4.22. Search of malfunctions of system of injection of fuel
4.23. Diagnostics of malfunctions of a power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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4.15. Check of functioning of system of injection of fuel

Fuel is extremely inflammable, therefore accept additional precautionary measures at work with any part of fuel system. Do not smoke and do not allow emergence near a working zone of open fire and lamps without plafonds. Do not work in garage with the equipment at natural gas (such as heaters of water or clothes dryers) with a match. At fuel hit on skin immediately wash away it water and soap. At performance of any work with fuel system use goggles and keep in readiness the fire extinguisher.


 PERFORMANCE ORDER

  1. Check connection of wires of the case. Check all sockets of cables which are connected with system. The weakened sockets and bad connections with the case can cause many problems which will result in more serious malfunctions.
  2. Be convinced that the storage battery is completely charged, as for the correct dispensing of fuel the control unit and sensors need uninterrupted power supply.
  3. Check filtering element of the air filter - the polluted or partially corked filter strongly worsens work and profitability (look Head Routine maintenance of the car).
  4. If the fused safety lock is found, replace it and check, whether it fused again. If yes, that look for the wire short-circuited on the case in a cable connected with system.
  5. Check existence of leaks in an admission air line from a measuring instrument of a stream of air to the inlet pipeline. Also check a condition of vacuum hoses suitable to the inlet pipeline.
  6. Disconnect from the throttle case an air line of an admission and check availability in it of dirt, a deposit and other osazhdeniye. In case of pollution clear it means for cleaning of the carburetor and a toothbrush.
  1. On the working engine touch in turn each injector with a screw-driver or a stethoscope and hear to existence of the clicks indicating functioning.
  1. Check pressure in fuel system (look the Section Check of pressure of fuel / the fuel pump).
  2. If these checks do not allow to find malfunction, send the car to the dealer of BMW who on the special equipment can read ECU codes of malfunctions from memory.


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4.14. Systems of injection of fuel
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4.16. Functioning check, removal and installation of a measuring instrument of a stream of air